EHS5 loses socket configuration | Telit Cinterion IoT Developer Community

I'm running into an issue where I lose socket configuration after 11 hours of operation.  The following log shows the last succesfull heartbeat (hb every 20 minutes to server) to failure.  What would cause the socket info to get lost?  Note, all other system functions continue to operate.

AT^SISS=2,"srvType","Http"

OK

AT^SISS=2,"conId",0

OK

AT^SISS=2,"address","https://prdev.zipitwireless.net:4444/device/status/"

OK

AT^SISS=2,cmd,"post"

OK

AT^SISS=2,"hcProp","Content-Type: application/json\0D\0AAuthorization: Basic ZXlKMGVYQWlPaUpLVjFRaUxDSmhiR2NpT2lKSVV6RWlmUS5leUp6ZFdJaU9pSXhNREF4TnlJc0ltVjRjQ0k2TVRRek16RTVNelV6T0RBMk9Td2lhblJwSWpvaVd6UTRMREUwTmwwaWZRLkNfSVpyQ2FrZjI2WHBjLUZLaURpUmRGZzhDRQ=="

OK

AT^SISS=2,"hcContLen",105

OK

AT^SISO=2

OK

^SIS: 2,0,2200,"Http prdev.zipitwireless.net:4444"

^SISW: 2,1

AT^SISW=2,105

^SISW: 2,105,0

{"bars":2,"batpwr":0,"maint":0,"rssi":11,"status":0,"timestamp":"2015-06-01T08:20:50.011Z","voltage":100}

OK

^SISW: 2,1

AT^SISW=2,0,1

^SISW: 2,0,0

OK

^SISW: 2,2

^SIS: 2,0,2200,"HTTP POST: https://prdev.zipitwireless.net:4444/device/status/"

^SIS: 2,0,2200,"HTTP POST Response: 200"

^SISR: 2,1

AT^SISR=2,1500

^SISR: 2,96

{"timestamp":"2015-06-01T08:21:28.334Z","pollfordosing":0,"pollforconfig":0,"pollforfirmware":0}

OK

^SISR: 2,2

AT^SISR=2,1500

^SISR: 2,-2

OK

AT^SISC=2

OK

AT+CCLK?

+CCLK: "15/06/01,04:26:41"

OK

AT^SMONI

^SMONI: 3G,9766,291,-2.0,-91,310,410,231E,D002749,20,24,NOCONN

OK

AT+CCLK?

+CCLK: "15/06/01,04:36:22"

OK

AT^SMONI

^SMONI: 3G,9766,291,-2.0,-91,310,410,231E,D002749,20,24,NOCONN

OK

AT+CCLK?

+CCLK: "15/06/01,04:41:29"

OK

AT^SMONI

^SMONI: 3G,9766,291,-2.0,-91,310,410,231E,D002749,20,24,NOCONN

OK

AT^SMONI

^SMONI: 3G,9766,291,-2.0,-91,310,410,231E,D002749,20,24,NOCONN

OK

AT+CSQ

+CSQ: 11,99

OK

AT^SISS=2,"srvType","Http"

OK

AT^SISS=2,"conId",0

OK

AT^SISS=2,"address","https://prdev.zipitwireless.net:4444/device/status/"

OK

AT^SISS=2,cmd,"post"

OK

AT^SISS=2,"hcProp","Content-Type: application/json\0D\0AAuthorization: Basic ZXlKMGVYQWlPaUpLVjFRaUxDSmhiR2NpT2lKSVV6RWlmUS5leUp6ZFdJaU9pSXhNREF4TnlJc0ltVjRjQ0k2TVRRek16RTVNelV6T0RBMk9Td2lhblJwSWpvaVd6UTRMREUwTmwwaWZRLkNfSVpyQ2FrZjI2WHBjLUZLaURpUmRGZzhDRQ=="

OK

AT^SISS=2,"hcContLen",104

OK

AT^SISO=2

OK

^SIS: 2,0,2200,"Http prdev.zipitwireless.net:4444"

^SISW: 2,1

AT^SISW=2,104

^SISW: 2,104,0

{"bars":2,"batpwr":0,"maint":0,"rssi":11,"status":0,"timestamp":"2015-06-01T08:41:30.010Z","voltage":90}

OK

^SISW: 2,1

AT^SISW=2,0,1

AT^SISO?

AT^SISO?

^SISO: 0,""

^SISO: 1,""

^SISO: 2,""

^SISO: 3,""

^SISO: 4,""

^SISO: 5,""

^SISO: 6,""

^SISO: 7,""

^SISO: 8,""

^SISO: 9,""

OK

AT+CEER

AT+CEER

+CEER: "No report available"

OK

AT^SISC=2

AT^SISC=2

+CME ERROR: invalid index

AT^SISS=2,"srvType","Http"

AT^SISS=2,"srvType","Http"

OK

AT^SISS=2,"conId",0

AT^SISS=2,"conId",0

OK

AT^SISS=2,"address","https://prdev.zipitwireless.net:4444/device/status/"

AT^SISS=2,"address","https://prdev.zipitwireless.net:4444/device/status/"

OK

AT^SISS=2,cmd,"post"

AT^SISS=2,cmd,"post"

OK

AT^SISS=2,"hcProp","Content-Type: application/json\0D\0AAuthorization: Basic ZXlKMGVYQWlPaUpLVjFRaUxDSmhiR2NpT2lKSVV6RWlmUS5leUp6ZFdJaU9pSXhNREF4TnlJc0ltVjRjQ0k2TVRRek16RTVNelV6T0RBMk9Td2lhblJwSWpvaVd6UTRMREUwTmwwaWZRLkNfSVpyQ2FrZjI2WHBjLUZLaURpUmRGZzhDRQ=="

AT^SISS=2,"hcProp","Content-Type: application/json\0D\0AAuthorization: Basic ZXlKMGVYQWlPaUpLVjFRaUxDSmhiR2NpT2lKSVV6RWlmUS5leUp6ZFdJaU9pSXhNREF4TnlJc0ltVjRjQ0k2TVRRek16RTVNelV6T0RBMk9Td2lhblJwSWpvaVd6UTRMREUwTmwwaWZRLkNfSVpyQ2FrZjI2WHBjLUZLaURpUmRGZzhDRQ=="

OK

AT^SISS=2,"hcContLen",104

AT^SISS=2,"hcContLen",104